On Fr, 23.07.99, Mark wrote

> Is it possible to use one of the timers just as a plain old
timer/clock without
> using another crystal hooked-up to the T1OSO/T1OSI pins?
> Is there any way to use a timer like this with just software control?

If you set TMR1CS in T1CON to zero, Timer 1 runs on the internal clock
(Fosc/4).

Jens


Message-ID: <000d01bed4bb$dddeeda0$40c6480c@default>
From: "Mark A. Samuels" <MSamuels99@worldnet.att.net>
Reply-To: "Mark A. Samuels" <MSamuels99@worldnet.att.net>
To: PICLIST@MITVMA.MIT.EDU
Subject: newbie timer question
Date: Fri, 23 Jul 1999 05:30:54 +0200
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X-Mailer: Internet Mail Service (5.5.1960.3)
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Hi all!
Ê
I have what may be a dumb question about the timers on the 16F877:
Ê
Is it possible to use one of the timers just as a plain old timer/clock
without using another crystal hooked-up to the T1OSO/T1OSI pins?Ê Is
there any way to use a timer like this with just software control?
Ê
I'm doing this for a tach-type counter, with the pulses being input
directly on T0CKI to be counted with timer0, and I was trying to figure
out how to use one of the other timers to count a specified amount of
time, then generate an interrupt, then I would have a certain amount of
pulses in a specified time.Ê I would like to do this using an interrupt
for the period instead of a delay or a loop so that it would be entirely
in the background.
Ê
Any help and code samples would be GREATLY appreciated!
Ê
Thanks!Ê
-Mark